[go: up one dir, main page]

IN171213B - - Google Patents

Info

Publication number
IN171213B
IN171213B IN79/CAL/89A IN79CA1989A IN171213B IN 171213 B IN171213 B IN 171213B IN 79CA1989 A IN79CA1989 A IN 79CA1989A IN 171213 B IN171213 B IN 171213B
Authority
IN
India
Application number
IN79/CAL/89A
Inventor
Eiki Izumi
Yasuo Tanaka
Hiroshi Watanabe
Kuniaki Yoshida
Toichi Hirata
Original Assignee
Hitachi Construction Machinery
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery filed Critical Hitachi Construction Machinery
Publication of IN171213B publication Critical patent/IN171213B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/255—Flow control functions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/633—Electronic controllers using input signals representing a state of the prime mover, e.g. torque or rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6333—Electronic controllers using input signals representing a state of the pressure source, e.g. swash plate angle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/634—Electronic controllers using input signals representing a state of a valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
IN79/CAL/89A 1988-01-27 1989-01-25 IN171213B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1655488 1988-01-27

Publications (1)

Publication Number Publication Date
IN171213B true IN171213B (en) 1992-08-15

Family

ID=11919498

Family Applications (1)

Application Number Title Priority Date Filing Date
IN79/CAL/89A IN171213B (en) 1988-01-27 1989-01-25

Country Status (8)

Country Link
US (1) US4967557A (en)
EP (1) EP0326150B1 (en)
JP (1) JPH07103881B2 (en)
KR (1) KR930002475B1 (en)
CN (1) CN1010969B (en)
AU (1) AU600400B2 (en)
DE (1) DE68903281T2 (en)
IN (1) IN171213B (en)

Families Citing this family (114)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083430A (en) * 1988-03-23 1992-01-28 Hitachi Construction Machinery Co., Ltd. Hydraulic driving apparatus
KR940008638B1 (en) * 1988-07-08 1994-09-24 히다찌 겐끼 가부시기가이샤 Hydraulic drive system of construction machinery
JPH02107802A (en) * 1988-08-31 1990-04-19 Hitachi Constr Mach Co Ltd Hydraulic driving device
JPH0786361B2 (en) * 1988-11-10 1995-09-20 株式会社ゼクセル Hydraulic control valve
DE69004789T3 (en) * 1989-01-18 1997-12-18 Hitachi Construction Machinery HYDRAULIC DRIVE UNIT FOR CONSTRUCTION MACHINERY.
KR940010867B1 (en) * 1989-01-27 1994-11-18 히다찌 겐끼 가부시기가이샤 Hydraulic driving running apparatus
EP0411151B1 (en) * 1989-02-20 1994-07-06 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit for working machines
KR940009215B1 (en) * 1989-03-22 1994-10-01 히다찌 겐끼 가부시기가이샤 Hydraulic Drive System for Civil and Construction Machinery
KR940009219B1 (en) * 1989-03-30 1994-10-01 히다찌 겐끼 가부시기가이샤 Hydraulic driving apparatus of caterpillar vehicle
WO1990013748A1 (en) * 1989-05-02 1990-11-15 Hitachi Construction Machinery Co., Ltd. Hydraulic driving device of construction equipment
DE3914904C2 (en) * 1989-05-05 1995-06-29 Rexroth Mannesmann Gmbh Regulation for a variable displacement pump that works depending on the load
US5209063A (en) * 1989-05-24 1993-05-11 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit utilizing a compensator pressure selecting value
WO1991002167A1 (en) * 1989-07-27 1991-02-21 Hitachi Construction Machinery Co., Ltd. Device for controlling hydraulic pump
EP0465655B1 (en) * 1989-10-11 1995-10-11 Hitachi Construction Machinery Co., Ltd. Hydraulic driving apparatus of civil engineering/construction equipment
US5101628A (en) * 1990-01-22 1992-04-07 Shin Caterpillar Mitsubishi Ltd. Energy regenerative circuit in a hydraulic apparatus
DE4005655C2 (en) * 1990-02-22 1993-10-07 Hydromatik Gmbh Device for adjusting the displacement volume of a hydrostatic machine
DE4005967C2 (en) * 1990-02-26 1996-05-09 Rexroth Mannesmann Gmbh Control arrangement for several hydraulic consumers
WO1991013217A1 (en) * 1990-02-28 1991-09-05 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system in construction machine
JP2828490B2 (en) * 1990-06-19 1998-11-25 日立建機株式会社 Load sensing hydraulic drive circuit controller
DE69132869T2 (en) * 1990-09-11 2002-04-25 Hitachi Construction Machinery Co., Ltd. Hydraulic control system for construction machines
GB2250611B (en) * 1990-11-24 1995-05-17 Samsung Heavy Ind System for automatically controlling quantity of hydraulic fluid of an excavator
EP0515639B1 (en) * 1990-12-15 1995-03-08 Barmag Ag Hydraulic system
DE59105057D1 (en) * 1990-12-15 1995-05-04 Barmag Barmer Maschf HYDRAULIC SYSTEM.
JP2900290B2 (en) * 1991-01-22 1999-06-02 富士重工業株式会社 Pressure control device for continuously variable transmission for vehicles
JP3216815B2 (en) * 1991-01-23 2001-10-09 株式会社小松製作所 Hydraulic circuit with pressure compensating valve
US5307631A (en) * 1991-01-28 1994-05-03 Hitachi Construction Machinery Co., Ltd. Hydraulic control apparatus for hydraulic construction machine
FR2672944A1 (en) * 1991-02-15 1992-08-21 Bennes Marrel PROPORTIONAL DISTRIBUTOR AND CONTROL ARRANGEMENT OF A PLURALITY OF HYDRAULIC RECEIVERS COMPRISING FOR EACH RECEIVER SUCH A DISTRIBUTOR.
US5138838A (en) * 1991-02-15 1992-08-18 Caterpillar Inc. Hydraulic circuit and control system therefor
JPH07112836B2 (en) * 1991-06-14 1995-12-06 富士重工業株式会社 Aircraft hydraulic steering system
DE4122164C1 (en) * 1991-07-04 1993-01-14 Danfoss A/S, Nordborg, Dk
DE4127342C2 (en) * 1991-08-19 1995-02-16 Danfoss As Hydraulic system with a pump
US5249421A (en) * 1992-01-13 1993-10-05 Caterpillar Inc. Hydraulic control apparatus with mode selection
US5267441A (en) * 1992-01-13 1993-12-07 Caterpillar Inc. Method and apparatus for limiting the power output of a hydraulic system
US5207059A (en) * 1992-01-15 1993-05-04 Caterpillar Inc. Hydraulic control system having poppet and spool type valves
DE4235709A1 (en) * 1992-10-22 1994-04-28 Linde Ag Hydrostatic drive system
DE4235707B4 (en) * 1992-10-22 2007-10-18 Linde Material Handling Gmbh Hydrostatic drive system
JP3139769B2 (en) * 1992-12-04 2001-03-05 日立建機株式会社 Hydraulic regeneration device
JP2567193B2 (en) * 1993-01-19 1996-12-25 三星重工業株式會社 Hydraulic pump discharge flow control device
KR0145144B1 (en) * 1993-03-23 1998-08-01 오까다 하지메 Hydraulic actuating device of hydraulic machine
CA2094313C (en) * 1993-04-19 1999-08-24 Bobbie Joe Bowden Automatic drilling system
SE501289C2 (en) * 1993-06-24 1995-01-09 Voac Hydraulics Boraas Ab Controls for a hydraulic motor
KR0152300B1 (en) * 1993-07-02 1998-10-15 김연수 Control method of discharge flow rate of hydraulic pump
JPH0742705A (en) * 1993-07-30 1995-02-10 Yutani Heavy Ind Ltd Hydraulic device for operation machine
KR950019129A (en) * 1993-12-30 1995-07-22 김무 Engine-pump control device and method of hydraulic construction machine
DE69617634T2 (en) * 1995-07-10 2002-05-08 Hitachi Construction Machinery Co., Ltd. HYDRAULIC CONTROL DEVICE
US5540049A (en) * 1995-08-01 1996-07-30 Caterpillar Inc. Control system and method for a hydraulic actuator with velocity and force modulation control
JP3606976B2 (en) * 1995-12-26 2005-01-05 日立建機株式会社 Hydraulic control system for hydraulic working machine
JP3567051B2 (en) * 1996-06-12 2004-09-15 新キャタピラー三菱株式会社 Operation control device for hydraulic actuator
JPH10196606A (en) * 1996-12-27 1998-07-31 Shin Caterpillar Mitsubishi Ltd Controller for hydraulic pump
JP3774014B2 (en) * 1997-01-27 2006-05-10 コベルコ建機株式会社 Control device for hydraulic work machine
US6209321B1 (en) * 1997-08-29 2001-04-03 Komatsu Ltd. Hydraulic controller for a working machine
JP3419661B2 (en) * 1997-10-02 2003-06-23 日立建機株式会社 Auto accelerator device for prime mover of hydraulic construction machinery and control device for prime mover and hydraulic pump
DE19745489B4 (en) * 1997-10-15 2004-07-22 O & K Orenstein & Koppel Aktiengesellschaft System for load-pressure-independent control and load holding of several rotary and / or translatory consumers
US6408622B1 (en) * 1998-12-28 2002-06-25 Hitachi Construction Machinery Co., Ltd. Hydraulic drive device
US6282891B1 (en) * 1999-10-19 2001-09-04 Caterpillar Inc. Method and system for controlling fluid flow in an electrohydraulic system having multiple hydraulic circuits
JP3854027B2 (en) 2000-01-12 2006-12-06 日立建機株式会社 Hydraulic drive
KR100438680B1 (en) * 2000-01-25 2004-07-02 히다치 겡키 가부시키 가이샤 Hydraulic driving device
US6516932B2 (en) * 2000-09-29 2003-02-11 New Holland North America, Inc. Electro-hydraulic clutch hysteresis compensation
JP3696075B2 (en) * 2000-10-06 2005-09-14 Ｓｍｃ株式会社 Switching valve with magnetic sensor
US6701822B2 (en) 2001-10-12 2004-03-09 Caterpillar Inc Independent and regenerative mode fluid control system
US6715403B2 (en) 2001-10-12 2004-04-06 Caterpillar Inc Independent and regenerative mode fluid control system
US6684636B2 (en) * 2001-10-26 2004-02-03 Caterpillar Inc Electro-hydraulic pump control system
US6662705B2 (en) 2001-12-10 2003-12-16 Caterpillar Inc Electro-hydraulic valve control system and method
FI115552B (en) * 2002-11-05 2005-05-31 Sandvik Tamrock Oy Arrangement for controlling rock drilling
DE10257593A1 (en) * 2002-12-09 2004-07-01 Endress + Hauser Flowtec Ag, Reinach Process for filling a defined quantity of a medium in a container
DE10308289B4 (en) * 2003-02-26 2010-11-25 Bosch Rexroth Aktiengesellschaft LS-way valve block
DE10327519A1 (en) * 2003-06-17 2005-01-20 Ortlinghaus-Werke Gmbh Hydraulic circuit
US6848254B2 (en) * 2003-06-30 2005-02-01 Caterpillar Inc. Method and apparatus for controlling a hydraulic motor
JP4096900B2 (en) * 2004-03-17 2008-06-04 コベルコ建機株式会社 Hydraulic control circuit for work machines
CN102166153A (en) 2004-09-24 2011-08-31 斯特赖克公司 Ambulance cot and its hydraulic elevating mechanism
US7398571B2 (en) 2004-09-24 2008-07-15 Stryker Corporation Ambulance cot and hydraulic elevating mechanism therefor
CN100410549C (en) * 2004-12-28 2008-08-13 东芝机械株式会社 hydraulic control device
JP4287425B2 (en) * 2005-11-25 2009-07-01 日立建機株式会社 Pump torque control device for hydraulic work machine
JP4758877B2 (en) * 2006-12-07 2011-08-31 日立建機株式会社 Torque control device for 3-pump system for construction machinery
US8621855B2 (en) 2007-06-08 2014-01-07 Deere & Company Electro-hydraulic auxiliary mode control
DE112009000713B4 (en) * 2008-03-31 2016-10-06 Komatsu Ltd. Control system for part-turn actuators of construction machinery
EP2510268A2 (en) * 2009-12-10 2012-10-17 HydraForce, Inc. Proportional motion control valve
KR101630457B1 (en) * 2009-12-24 2016-06-15 두산인프라코어 주식회사 Power control apparatus for construction machinery
KR101648982B1 (en) * 2009-12-24 2016-08-18 두산인프라코어 주식회사 Hydraulic pump control apparatus for construction machinery and hydraulic pump control method for the same
CN102713089B (en) * 2009-12-24 2015-03-25 斗山英维高株式会社 Power control apparatus for construction machinery
CN103003498B (en) * 2010-07-19 2015-08-26 沃尔沃建造设备有限公司 For controlling the system of the hydraulic pump in construction machinery
EP2686561A1 (en) * 2011-03-17 2014-01-22 Parker-Hannificn Corporation Electro-hydraulic system for controlling multiple functions
US9211808B2 (en) * 2012-03-07 2015-12-15 Clark Equipment Company Power management for a drive system
CN102607876B (en) * 2012-04-13 2014-12-10 山东大学 Multi-path high-precision hydraulic loading and unloading servo control system suitable for model test
CN102734276B (en) * 2012-06-28 2015-07-01 三一汽车起重机械有限公司 Load sensing electric proportion hydraulic control system and engineering machinery
KR101719676B1 (en) * 2012-10-17 2017-03-24 가부시키가이샤 히다치 겡키 티에라 Hydraulic driving system for construction machine
CN102878144A (en) * 2012-10-26 2013-01-16 北京机械设备研究所 Multi-channel load-sensitive hydraulic control circuit
WO2014084213A1 (en) * 2012-11-27 2014-06-05 日立建機株式会社 Hydraulic drive device of electric hydraulic machinery
CN103016466B (en) * 2012-12-24 2015-03-25 中联重科股份有限公司 Hydraulic oil supply unit, hydraulic pump station and oil supply control method of hydraulic oil supply unit
US9518655B2 (en) 2013-01-29 2016-12-13 Deere & Company Continuously adjustable control management for a hydraulic track system
US9145905B2 (en) 2013-03-15 2015-09-29 Oshkosh Corporation Independent load sensing for a vehicle hydraulic system
US20140366955A1 (en) * 2013-06-13 2014-12-18 Caterpillar Global Mining America Llc Remote regulator for roof bolter
CN104514765B (en) * 2013-09-26 2018-02-23 陕西中大机械集团有限责任公司 For controlling the banked direction control valves hydraulic system of Paver Hydraulic accessory system
EP2889433B1 (en) * 2013-12-20 2019-05-01 Doosan Infracore Co., Ltd. System and method of controlling vehicle of construction equipment
KR102181125B1 (en) * 2013-12-20 2020-11-20 두산인프라코어 주식회사 Apparatus and method for controlling vehicle of construction equipment
CN105221277B (en) * 2014-07-01 2017-11-21 徐工集团工程机械股份有限公司 Crane engine Poewr control method and system
CN105987033B (en) * 2015-02-11 2018-08-14 徐工集团工程机械股份有限公司 The more executing agency's hydraulic systems of low energy consumption and excavator
US10196131B2 (en) * 2016-02-16 2019-02-05 The Boeing Company Hydraulic system and method for an aircraft flight control system
CN107355437B (en) * 2017-06-28 2023-04-25 安徽柳工起重机有限公司 Load-sensitive rotary buffer valve and crane rotary hydraulic system
DE102018202148B3 (en) * 2018-02-12 2019-03-07 Hawe Hydraulik Se Hydraulic valve assembly with forced switching and mobile hydraulic system
EP3818271B1 (en) * 2018-07-06 2022-09-07 Sandvik Mining and Construction G.m.b.H. Hydraulic master and slave drive motor control system
JP7130474B2 (en) * 2018-07-11 2022-09-05 住友建機株式会社 Excavator
JP7049213B2 (en) * 2018-08-10 2022-04-06 川崎重工業株式会社 Hydraulic circuit of construction machinery
CN110005650A (en) * 2019-04-30 2019-07-12 郑钧译 A kind of floating type automatic hydraulic press of double servos
US11225775B2 (en) * 2019-06-26 2022-01-18 Deere & Company Cycle time calibration
DE102019219451A1 (en) * 2019-07-26 2021-01-28 Robert Bosch Gmbh Hydraulic pressure medium supply arrangement for a mobile work machine and method
CN111765137B (en) * 2020-06-12 2022-07-19 中联重科股份有限公司 Compound action detection module, hydraulic system and crane
SE545533C2 (en) * 2021-03-04 2023-10-17 Husqvarna Ab A hydraulic system for construction machines and a method for controlling the hydraulic system
CN113158344B (en) * 2021-04-22 2024-02-23 上海三一重机股份有限公司 Control method and device for auxiliary pipeline of excavator, working machine and electronic equipment
CN113775579B (en) * 2021-09-13 2024-06-25 中国铁建重工集团股份有限公司 Thrust cylinder control system and method, hydraulic thrust control system and heading machine thereof
US11834811B2 (en) 2021-10-25 2023-12-05 Cnh Industrial America Llc System and method for controlling hydraulic pump operation within a work vehicle
US11608615B1 (en) * 2021-10-26 2023-03-21 Cnh Industrial America Llc System and method for controlling hydraulic valve operation within a work vehicle
CN114623112B (en) * 2022-04-11 2024-06-28 华侨大学 A pure electric anti-flow saturation load sensitive system and engineering machinery device
CN118257899B (en) * 2024-05-29 2024-08-20 中国空气动力研究与发展中心超高速空气动力研究所 Thermal valve electrohydraulic control system and application method

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3049938A1 (en) * 1979-10-15 1982-03-18 Y Aoyagi Method of controlling internal combustion engine and hydraulic pump system
US4345435A (en) * 1980-05-05 1982-08-24 Sperry Corporation Power transmission
DE3176207D1 (en) * 1980-10-09 1987-06-25 Hitachi Construction Machinery Method for controlling a hydraulic power system
JPS58134342A (en) * 1982-02-05 1983-08-10 Toshiba Corp External interrupting device
JPS58174707A (en) * 1982-04-06 1983-10-13 Daiden Kk Hydraulically-driven circuit for plural machines
DE3321483A1 (en) * 1983-06-14 1984-12-20 Linde Ag, 6200 Wiesbaden HYDRAULIC DEVICE WITH ONE PUMP AND AT LEAST TWO OF THESE INACTED CONSUMERS OF HYDRAULIC ENERGY
DE3422165A1 (en) * 1983-06-14 1984-12-20 Linde Ag, 6200 Wiesbaden Hydraulic arrangement with a pump and at least two consumers of hydraulic energy acted upon by this pump
EP0150308A3 (en) * 1984-01-30 1986-10-01 Trw Inc. Apparatus for controlling fluid flow
JPS60195339A (en) * 1984-03-17 1985-10-03 Hitachi Constr Mach Co Ltd Hydraulic pump driving system controller
JPS60222601A (en) * 1984-04-20 1985-11-07 Komatsu Ltd Hydraulic controller
JPS614848A (en) * 1984-06-18 1986-01-10 Hitachi Constr Mach Co Ltd Controller for system equipped with prime mover and hydraulic pump
JPS6111429A (en) * 1984-06-26 1986-01-18 Hitachi Constr Mach Co Ltd Control device for system inclusive of prime mover and hydraulic pump
GB2171757B (en) * 1985-02-28 1989-06-14 Komatsu Mfg Co Ltd Method of controlling an output of an internal combustion engine and a variabledisplacement hydraulic pump driven by the engine
JPS6246724A (en) * 1985-08-26 1987-02-28 Toyota Motor Corp Control method and device for automatic clutch of vehicle
JPH0668281B2 (en) * 1985-09-30 1994-08-31 株式会社小松製作所 Flow control method and device
DE3546336A1 (en) * 1985-12-30 1987-07-02 Rexroth Mannesmann Gmbh CONTROL ARRANGEMENT FOR AT LEAST TWO HYDRAULIC CONSUMERS SUPPLIED BY AT LEAST ONE PUMP
CN1010794B (en) * 1986-01-11 1990-12-12 日立建机株式会社 hydraulic pump input power control system
US4747335A (en) * 1986-12-22 1988-05-31 Caterpillar Inc. Load sensing circuit of load compensated direction control valve
DE3817218A1 (en) * 1987-06-11 1988-12-22 Mannesmann Ag HYDRAULIC CONTROL SYSTEM FOR A HYDRAULIC EXCAVATOR
AU603907B2 (en) * 1987-06-30 1990-11-29 Hitachi Construction Machinery Co. Ltd. Hydraulic drive system
JPH076521B2 (en) * 1987-06-30 1995-01-30 日立建機株式会社 Load sensing hydraulic drive circuit controller

Also Published As

Publication number Publication date
EP0326150B1 (en) 1992-10-28
KR890012093A (en) 1989-08-24
US4967557A (en) 1990-11-06
KR930002475B1 (en) 1993-04-02
AU2886489A (en) 1989-07-27
EP0326150A1 (en) 1989-08-02
CN1010969B (en) 1990-12-26
DE68903281D1 (en) 1992-12-03
JPH07103881B2 (en) 1995-11-08
DE68903281T2 (en) 1993-05-19
AU600400B2 (en) 1990-08-09
CN1035868A (en) 1989-09-27
JPH01312202A (en) 1989-12-18

Similar Documents

Publication Publication Date Title
IN171213B (en)
FR2636723B1 (en)
FR2627073B1 (en)
FR2635300B1 (en)
IN172355B (en)
IN171233B (en)
FR2631354B1 (en)
FR2641109B1 (en)
FR2630924B1 (en)
FR2633433B1 (en)
FR2640936B3 (en)
FR2628304B1 (en)
FR2641038B1 (en)
FR2641071B1 (en)
FR2629391B1 (en)
FR2641133B1 (en)
FR2632897B1 (en)
FR2630225B3 (en)
FR2640944B1 (en)
FR2635554B1 (en)
FR2640952B1 (en)
FR2630172B1 (en)
GR3006335T3 (en)
FR2641058B1 (en)
FR2639864B1 (en)